Klean Kanteen canisters keep your food or dry goods fresh and tasty. Grease pencil friendly, simply mark the tare weight on the container and proceed to checkout. All Klean canisters are made from high-quality, 18/8 food-grade stainless steel that doesn't absorb food flavors or odors. Double-wall vacuum insulation keeps contents hot up to 4 hours, and iced up to 12. Klean's insulated lid is packed with recyled, corrugated cardboard, an exceptionally efficient and environmentally responsible solution to the status quo.